CAJ | 학술논문

为寻找提升决明幼苗耐盐性的方法,测量了不同处理下决明幼苗叶片的光合色素、超氧阴离子、丙二醛的含量,以及保护酶系统中 SOD 、POD 、CA T 的活性.结果表明,经150 mmol ? L‐1 NaCl 处理,决明幼苗叶片的光合色素含量显著降低,而超氧阴离子、丙二醛的含量以及保护酶 SOD 、POD 、CA T 的活性显著升高.不同浓度的外源5‐氨基乙酰丙酸在不同程度上增加了决明幼苗叶片的叶绿素、类胡萝卜素含量,进一步增强了保护酶 SOD 、POD 、CAT 的活性,降低了超氧阴离子、丙二醛的含量.在外源5‐氨基乙酰丙酸浓度为50 mg ? L‐1时,恢复效果最为明显(80.0、196.4和114.1 U ? g‐1),有效地缓解了盐胁迫对决明幼苗的伤害.
위심조제승결명유묘내염성적방법,측량료불동처리하결명유묘협편적광합색소、초양음리자、병이철적함량,이급보호매계통중 SOD 、POD 、CA T 적활성.결과표명,경150 mmol ? L‐1 NaCl 처리,결명유묘협편적광합색소함량현저강저,이초양음리자、병이철적함량이급보호매 SOD 、POD 、CA T 적활성현저승고.불동농도적외원5‐안기을선병산재불동정도상증가료결명유묘협편적협록소、류호라복소함량,진일보증강료보호매 SOD 、POD 、CAT 적활성,강저료초양음리자、병이철적함량.재외원5‐안기을선병산농도위50 mg ? L‐1시,회복효과최위명현(80.0、196.4화114.1 U ? g‐1),유효지완해료염협박대결명유묘적상해.
@@@@In order to get the method to improve the salt resistance of seedlings for Cassia obtusi f olia under salt stress ,physiological characteristics of C .obtusi f olia seedlings were studied .Several physiological indexes of C .ob‐tusi f olia seedlings under salt stress like photosynthetic pigment ,superoxide anion(O‐2 .) ,malondialdehyde(MDA) , superoxide(SOD) ,peroxidase(POD) and catalase(CAT ) were measured .The rate of decrease was re‐lieved and the content of O . ,MDA decreased .The activities of three enzymes including SOD ,POD and CAT were increased by the treatment of ALA ,and reached the maximin(80 .0 U ? g‐1 ,196 .4 U ? g‐1 and‐2 114 .1 U ? g‐1 respectively)with the concentration of 50 mg ? L‐1 .ALA with concentration of 50 mg ? L‐1 could significantly alleviate the damages to the seedlings of C .obtusi folia under salt stress ,and promote the salt resistance of the seedlings .